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A teenage boy or man who isn't fat at all, and is actually quite attractive, but has self-esteem issues like that of a 15-year-old girl.
Fatty mikes are usually straight, but have EXTREMELY feminine qualities, like reading their girlfriend's YM & Cosmopolitan magazines, waxing pubic hair, and are weirdly emotional.
See also metrosexual.
HA!HA! Fatty Mike shaves his legs!
by anherotaylor August 11, 2007
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